Improvement in locks



UNITED STATES PATENT OIT-Flein,`

CHARLES T. GIBSON, or BALTIMORE, MARYLAND;

IMPROVEMENT IN LOOKS.

Specification forming part of Letters Patent No. 49,10I, dated August 1, 1865.

To all lwhom/t ma/y concern:

Be it known that I, CHARLES T. GIBSON, of

the city and county of Baltimore, State ofMaryland,have invented anew and Improved Lock; and I do herebydeclare that the following is a full, clear, and exact description thereof, reference being had to the accompanying drawings, making a part of' this specilicatiomiu Which- Figure lis a front view of my improved lock, showing a hasp applied to it land locked in place. Fig. 2 is afront view of the lock, showing` the sealing-barthrown Open. Fig. 3 is a View similar to Fig. 1, but showing the inte rior ofthe lock. Fig. 4 shows the sealing-bar in the act of being locked. Fig. 5 is a vertical cross-section` taken through the parts indicated by red line y, Fig. 3.

Similar letters of reference indicate corresponding parts in the several gures.

Locks which have hitherto been..nemployrd on railroad freight-cars are very objectionable, principally on account of theimpracticability of breaking open such locks without rendering them worthless--an operation which is often rendered necessary in consequence of carelessness on the part of employs.

The object of my invention is chiefly to obviate the above objection by providing for locking the hasp directly to the frame of the lock and outside of the mechanism contained within said frame, so that the hasp may be broken when fastened to the lock, without in any manner injuring said mechanism, as will be hereinafter described.

Another object of my inven tion is to dispense with the use of what are known as padlocks,77 and to contrive a lock which can be permanently securedin its place to a door, shutter, or doorframe and locked or unlocked very readily, as will be hereinafter described.

To enable others skilled in the art to understand my invention, I will describe its construction and operation." Y

That portion of the frame of the lock which contains the lock mechanism is of a box form, with its back part left open to receive the lockplate A. This box B is formed with aprojection, B', on one end, through which a` bolt is passed for securing the lock to a door or the frame of a door, and on the other end aplate, B2, is formed, which is also adapted for receiving bolts through it. The box B projects from plate B2, as shown clearly in Fig. 5; also, to adi mit between the sealing-bar and the outer face of the plate B2 a hasp, D. i

The hasp D may beconstructed, like any ordinary hasp, with an oblong slot,d3,` through its head, and, if desirable, a thumbpiece,c, on one end, as shown in Figs. 1, 3, and 4, `and to effect the connection ot'` this hasp D with the frame of the lock I cast orotherwise apply an oblong tongue, s, on the plate" B2, to receive the slot which is through the hasp, as shown in Figs. 2, 3, 4, and 5. When the hasp is thus applied to the frame of thelock the barGis swung around to the position represented in Figs. 1,l

3, and 5, and locks or seals the hasp in place. The sealing-bar O has a tongue, d, formed on its free end, which is slightly beveled, also a lip, d', between which latter and the tongue U1` is a recess for receivingthe nose ofthe bolte, as shown in Fig. 3. The lip dabuts against the side of' the lock-box when the `parts are locked, and serves as a stop and also asacloser for the slot which is made through said box to receive the free end of the scalingbar C.

The mechanism of the lock consists ot' a sliding bolt, e, which is acted upon by a spring, c',

and which is constructed with a nose, 62,011 one end and a stop, e3, cuits opposite end, as shown in Figs. 3 and 4. This bolt is partially covered by a flanged plate, f, which, together with the bolt, is guided between studs g g on the lockplate A. A projection (not shown in the drawings) is formed on plate fto admit of its being moved by the key J, and when thus moved the bolt c will move with it, but the bolt e can be moved by the sealing-bar C independently of platef when this bar is forced home in its recess r in the lock-box,.as shown in Fig. 4.

I employ two or `more tumblers, t t, which are pivoted at i, and constructed of different sizes, so as to require a key of a peculiar form to open the lock. These tumblers havenotch es h cut in their edges to receive a stump, h', on

the sliding-plate f, and when both notches are brought directly in a line with `the stump h' the bolt e can be moved back, but not otherwlsc. and held in place by means of a strip, j, which crosses them, as shown in Figs. 3 and 4. Iconi i The tumblers are acted upon by springs 1 not interfere with the mechanism of thelock in any respect.

The hasp D is pivoted or hinged at one end in the usual manner of attaching a hasp, and when its opposite end is locked in place upon the plate B2 by means of the tongue s and sealing-bar C it is evident that the hasp can be broken at an intermediate point between its ends lWithout in any manner injuring the mechanism ofthe lock. By my invention, therefore, it vwill only be necessary to furnish new hasps, Whereas with the common locks on freight-cars both the lock itself and also the hasp are broken and very often rendered Vuseless when it isvnecessary to enter a car lwhich is locked without the proper key.

.My invention is not only applicable tothe d'oorsof freight-cars, but it will be found to ans-'Wer a better purpose than the padlocks'for other purposes.

Having thus described my invention, what I claim as new, and desire to secure l by Let'- ters Patent, is-4 I l. A lock which is provided with a movable sealing-bar, C, and tongue s, adapted for securingahasp or its equivalent upon the frame of the'lock outside of the case' thereof, substantially as described.

2. The swinging bar C, in combination with a tongue, s, and extension B2 of the lock-case, substantially as described. v

3. Constructing the laterally-swinging bar G with a tongue, d, and stop d on its free end, in combination with a spring-bolt, e, substantially as described.

4. Applying the tongue s Which receivesl the hasp D to the extension B2 of the lock-frame, in combination with a bar, C, and latch orbolt e, substantially as described.

Witness my hand in matter of my application for a patent for Vimprovement in` locks.

CHARLES T. GIBSON.

Witnesses:

R. T. UAMPBELL, E. SCHAFER. 

